{"instruction": "You are an expert in named entity recognition. Please extract entities that match the schema definition from the input. Return an empty list if the entity type does not exist. Please respond in the format of a JSON string.", "schema": ["food", "plant", "geographical phenomenon", "disease", "person", "media", "organization", "mythical figure"], "input": "The algebraic study of free groups was initiated by Jakob Nielsen in 1924 , who gave them their name and established many of their basic properties ."}
{"food": [], "plant": [], "geographical phenomenon": [], "disease": [], "person": ["Jakob Nielsen"], "media": [], "organization": [], "mythical figure": []}